package com.hj.reggie.config;

import com.hj.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;


/**
 *
 * @author 37460
 */
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /**
     * 设置静态映射
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射");
        registry.addResourceHandler("/backend/**")
                .addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**")
                .addResourceLocations("classpath:/front/");
    }

    /**
     *扩展mvc的消息转换器
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter mappingJHMeConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将java对象转换为json
        mappingJHMeConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中 0优先使用我们自己的转化换器
        converters.add(0, mappingJHMeConverter);
    }


}
